Improvement in warping-machiktes



@tutti (gratta gaat amm Roscoe o. vImruonns AND crans 1. Banana or -Lnwisron MAINE.'

ctters Patent No. 100,070, dated February 22, 1870.

The Schedule referred to in these Letters Patent and uakng part o! the same.

othersfskilled in the art to make and use. the same,V

reference being had to the accompanying drawing forming part ot this .specilication This invention relates. to improvements iii-warping# machines, and consists in so arranging the drivingmechanism of the warping-roller that it may, by the movement of a hand-lever, be started and run slowly and gradually increased to the required motion before the belt is shipped to the fast pulley. rlhe object being to iirst take up the slack of the yarn given ol. by the spools in consequence of being continued iu motion at the timeof stopping vby their momentum longer than the roller, and to start the spools into motion again Without breaking the yarn.

Figure 1 represents a plan view of' our machine, partly broken away, land Figure 2 represents a transverse section of the saine.

Similar letters'of reference; Iindicante corresponding parts.

The warping-machine, consisting of the spool-spindles A, roller B, tension-1ollers.C, slotted posts D,

.guide-rod E, roller F, drum G, warp-beam supports H and their gljuncts, is similar to those How in use.

Our imntion consists in arranging one of the'driving-pulleys I K, preferably the loose one l, to slide on the shaft to and from the other, and in providing fric tion surfaces between them, so that before the belt is moved onto the fast pulley, the machine may be set in motion slowly and gradually, "without subjecting the yarn to sudden and undue strains.

Wealso provide a crotch, L, sliding rod M and hand-lever N for moving the sliding wheel.

Also a spiral spring, O, for keeping the pulleys apart When'not required to come together. We propose to of the posts D.

employ any arrangement of means for sliding the movable pulley which will be most convenient.

These machines lare required to stop suddenly when a thread breaks, and they are commonly provided with stopping apparatusfor eEecting the same automatically. When they stop, the spools often run longer than i the roller or warp-beam,and give o` slack yarn,Which is taken up by the falling of the tension-roller C, the journals of which work up and down in the grooves a.

When the machines are set suddenly in motion at the usual speed,the slack is taken up and 'tbe tensionrollers drawn up against the upper walls of the slots with 'such force as to-eause the threads to break. To avoid this'it is now the common practice to turn the large roller by hand until the rollers G are brought u'p and the' threads drawn taut iom the spools.

Now, our invention has for its object to obviate the timeand labor of turning the machine by hand in this way, by drawing the loose pulley, which is in motion when the machine is standing still, upy against the other, so as to set it invslow motion until the slack is taken up,- after which the friction is increased and thema'chine set intot'ull motion, and the beltisl shifted onto thel'ast pulley, the full speed being thus put on without damage to the yarn.

Having thus described our invention,

.W'eclaim as new and desire to secure by Letters Paten1t"- A The arrangement o f fast and loose pulleys on the driving-shaft of a warping-machine, to be brought into frictional'contact for imparting a slow movement toV the machine Vat starting, through the medium of the; frictional action of the loose pulley (moving at full speed) on the4 tixed pulley, previous to-shifting the belt, all substantially as specified.

ROSOOE G. REYNOLDS.- GYRUS L BARKER. Witnesses:

JOHN G. KELLEY, J oHN B. COTTON. 

